在springboot 2.1.9.RELEASE测试可用, 可以显示springboot内部debug日志,方便看代码
第一种是直接在application.yml
logging:
level:
root: trace
第二种,配置logback
- 简单配置
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true" scan="false" scanPeriod="1 seconds">
<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d [%thread] %-5level %logger{36} [%file : %line] - %msg%n</pattern>
</encoder>
</appender>
<root level="trace">
<appender-ref ref="stdout"/>
</root>
</configuration>
debug="true"
可以输出配置结果
10:02:15,511 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/C:/Users/mjoys/proj/bank_3d_web/manage/target/classes/logback.xml]
10:02:15,909 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to TRACE
10:02:15,909 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [stdout] to Logger[ROOT]
如果看到下面的Propagating
,说明在其他配置中,配置了日志输出级别
10:02:17,026 |-INFO in ch.qos.logback.classic.jul.LevelChangePropagator@495b0487 - Propagating INFO level on Logger[ROOT] onto the JUL framework
- 其他完整版
resources/logback.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true" scan="true" scanPeriod="1 seconds">
<contextName>logback</contextName>
<!--定义参数,后面可以通过${app.name}使用-->
<property name="app.name" value="logback_test"/>
<!--ConsoleAppender 用于在屏幕上输出日志-->
<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
<!--定义了一个过滤器,在LEVEL之下的日志输出不会被打印出来-->
<!--这里定义了DEBUG,也就是控制台不会输出比ERROR级别小的日志-->
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>DEBUG</level>
</filter>
<!-- encoder 默认配置为PatternLayoutEncoder -->
<!--定义控制台输出格式-->
<encoder>
<pattern>%d [%thread] %-5level %logger{36} [%file : %line] - %msg%n</pattern>
</encoder>
</appender>
<!--root是默认的logger 这里设定输出级别是debug-->
<root level="trace">
<!--定义了两个appender,日志会通过往这两个appender里面写-->
<appender-ref ref="stdout"/>
</root>
</configuration>